Coin-operated lock.



H. F. CHREITZBERG. COIN OPBRATBD LOCK. APPLICATION FILED JUNE 17, 1909.

Patented May 10, 1910.

2 SHEETS-BHBET 1.

NVE/'WOR Homey WTNESSES H. F. CHREITZBERG.

COIN OPERATED LOCK. APPLICATION FILED JUNE 17, 1909.

Patented May 10, 1910.

2 SHEETS-SHEET 2.

HILLIARD FRANCIS CHREITZBERG, OF MONROE, NORTH CAROLINA.

COIN-OPERATED LOCK.

Specification of Letters Patent.

)Patented May 10, 1910.

Application filed. .Tune 17, 1909. Serial No. 502,714.

To all 'who/m it may concern:

Be it known that I, I-IILLIARD FRANCIS CHREITZBERG, a citizen of theUnited States, residing atyMonroe, in the county of Union and State ofNorth Carolina, have invented certain new and useful Improvements inCoin-Operated Locks, of which the following is a specification.

My invention relates to improvements in coin operated locks, and theleading object of my invention is the provision of a lock of thischaracter which can be readily applied to a door and will prevent theopening of the same from the outside without the depositing of a cointherein.

Another object of my invention is the provision of a coin controlledlock which while it cannot be operated from the outside without thedepositing of a coin can be readily unlocked from the other side.

A further object of my invention is the provision of a lock of thischaracter which can be operated by coins of various denominations.

With these and other hereinafter disclosed objects in mind, my inventionconsists in a coin controlled lock embodying novel features ofconstruction and combination and arrangement of parts for servicesubstantially as described and as ,illustrated in the accompanyingdrawings which show one of the embodiments of my invention.

Figure 1, represents a front elevation of the lock as applied to a door,the door and casing being shown in dotted lines. Fig. 2, represents aside elevation of the same, part of the coin chute b-eing shown insection. Fig. 3, represents an enlarged detailed frag- Inentary view ofthe releasing mechanism on the back of the lock, the interior workingparts being shown in dotted lines. Fig. 4, represents a view of the rearof the device applied to a door with the back of the casing removed.Fig. 5, represents a perspective View of the unlocking key or lever.Fig. 6, represents a front view of the bolt and operating mechanismtherefor. Fig. 7

represents a perspective view of the coin box locking mechanism, and,Fig. 8, represents a perspective view of the retaining plate therefor.

In the drawings: the numeral 1, desig nates a door, having a slot 2formed therein to permit of the passage of a coin, and Secured over theopening in the door and having a slot to correspond therewith is theplate 3, said plate having formed on the back thereof the short chute 4L.into which the coin inserted in the slot passes. Secured to the back ofthe door is my coin operated lock having the casing 5 terminating at.the upper side in the coin chute 6, said chute having a flaring'lip 7which extends into the slot in the door and forms a flush oint with theunder side of the chute 4, thus providing a smooth easy passage from theslot into the lock proper. Pivotally secured by the stem 8, mounted inthe sleeve 8 inserted in the casing 1, is the lever 9, one end of saidlever projecting through the slot 10 in the wall of the coin chute 6into the chute, While the other end of the lever has formed therein thenotch or recess 11 which engages and locks firmly in position theshouldered portion 12 of the rejecting lug 13 on the cam plate 141. Saitcam plate 14: has formed in its center the squared opening 15 in whichfits and is secured the inwardly projecting squared end 16 of the rod17, the intermediate portion of said rod being round and journaled inthe sleeve or bearing 17 formed on the casing 5 and inserted in thedoor, while its other end 18 is also squared and has secured thereon theknurled knob 19 which serves to turn the rod and attached plate.Slidably secured to the front of the casing 5 above said cani plate isthe bolt 20, having the projection 21 on the upper side of its innerend, the coiled spring 22 having one end secured to said projection andthe other to the end of the casing to normally force the other end ofthe bolt outward through the customary slot in the end of the casing,the under side of the bolt being cut away to form the recess 23terminating at the rear in the abutment shoulder 24, and the outwardmovement of the bolt being limited by the engagement of said shoulderwith the lug 13, said lug being prevented from forward movement by theengagement of the notch in the lever 9 with its shoulder 12, and also bythe inwardly projecting stop lug 25 formed on the casing.

To permit of the ready opening of the door from the inside, I providethe knob 26 having its shank projecting through and working in the slot27 in the back of the casing, its end being secured in the bolt 2O as isshown in Figs. 8 and 4. After the door has been thus opened, in closingit is merely necessary to push the door inward,

the inner face of the bolt being beveled to slide inward upon contactwith the casing, the lug 13 projecting into the recess 23 and thereforenot interfering with the inward movement of the bolt.

To operate the lock from the outside, it is iirst necessary to insert acoin in the chute opening 2, said coin falling through the chute 6 andcontacting` with the end of the lever 9 and forcing it downward causingthe other end of the lever to ily up and release the lug 13, when by theturning of the knob 19 the lug 13 may be revolved and by pressingagainst the shoulder 2e of the bolt force the bolt back and unlock thedoor,

In the event of the failure of the lever 9 to release the lug 13,through the stopping up of the coin chute, or the action of the leverbeing prevented by undue filling of the coin box, I remove the retainingscrews 28 and turn the escutcheon plate until the key-hole 29corresponds with the opening in the door in which the sleeve 8 isinserted, when a screw driver or like tool may be passed through saidopening to engage the sl'ot in the end of the stem 8 and turned,

thus throwing the lever out of engagement with and releasing the lug 13,it being un derstood that the key-hole opening is normally in positionto permit of the insertion of a key into the lock to unlock and open thecoin box. The coins from the coin chute drop into the bottom of thecasing, and said bottom 80 is pivoted or hinged to the casing proper atone end and the lower edge of the casing terminates in a flange ofslightly reduced size over which said lower portion 30 lits and makes asnug joint with. To secure the other end of the bottom 30 in place, Iemploy my improved lock, consisting of the latch piece 31 and the casing3:2 therefor having the slots in which the ends of the latch slide, saidlatch piece and casing therefor being secured within the main casing andthe latch resting on a shoulder portion 34 formed integral with the sideof the casing. Secured to the side of the casing 5 is the flat spring 35which bea-rs against the latch member and presses it inward. The innerend 'of said latch member has its under side beveled to be more readilyforced back to allow of the snapping shut of the bottom of the coin boxwhile its upper face is plain and engages and retains in place the endof the slot 36 in the casing and thus the entire bottoni of the box.Said latch is also provided with the opening 37 in which a key may beinserted to unlock the device.

From the forgoing description taken in connection with the ldrawingsitwill be seen that I provideV ay strong, simple and durable coincontrolled lock which is adapted for use under a variety of conditions,which cannot readily be gotten ont 'of order and which will in all waysprove practical and efficient for the desired purpose.

I claim: l l

In vcombination with av door, a pair of sleeves mounted therein, shaftsmounted in the sleeves, one of said shafts having a groove formed in itsouter end and the outer end of the other shaft being 'of angularconformation to receive a knob, a bolt slidably secured to the innerside vof the door above said shafts, an arm on one of the shafts foroperating said bolt, a lever mounted on the other shaft and providedwith a recess adapted to enga-'ge the arm and hold the same inoperative,a coin lchute passing through the door and so disposed as to cause acoin deposited therein to 'contact with an extension of the lever tocause the latter to release the arm, means for securely retaining thecoins thus deposited, and means on the door for lconcealing the end ofthe lever shaft and thus preventing it under ordinary conditions frombeing turned by the insertion of means in the groove thereof to releasethe arm and thus avoid the payment vof a coin. l

In testimony whereof I affix my signature, in presence of two witnesses.

HILLIARD FRANCIS CHRE'IZBERG.

Vitnesses J. E. STEWART,

S. S. GRIFFIN.

